3.01-RC9 Thermo Fan on Full

tekkydave

Just upgraded from 3.01 RC6 to RC10 and notice my enclosure fans were on full belt.
I tried RC7 to RC9 to see where this appears and it happens with RC9.

I'm using the mcu-temp and drivers values to drive my enclosure fans on duex fan4 pins.
Works OK on RC6,7,8 : I get a gradual increase in speed from 40% when mcu temp exceeds 26C

On RC9,10 as soon as it goes over 26C (which it is on startup) the fans are on 100%

Relevant config (full config.g attached below)
M308 S2 Y"mcu-temp"
M308 S3 Y"drivers"
M950 F4 C"duex.fan4" Q500
M106 P4 S1.0 H2:3 T26:65 L0.4 C"Enclosure Fans"

Board: Duet 2 WiFi (2WiFi) plus Duex2
Firmware: RepRapFirmware for Duet 2 WiFi/Ethernet 3.01-RC9 (2020-04-21b1)
Duet WiFi Server Version: 1.23
DWC 2.1.5 (I'm on this release as I already upgraded to RRF 3.01RC10 first)

config.g

Everything else seems to be ok although I haven't tried a print yet

Edit: My hotend fan is working fine and comes on at 50C as specified.

dc42

What are the readings from sensors 2 and 3 at present? To find out either name them and then show them in DWC under Extras, or send M380 S2 and M308 S3.

tekkydave

Cut & pasted from DWC console:

27/04/2020, 14:40:30 M308 S2
Sensor 2 type Microcontroller embedded temperature sensor, reading 27.6, last error: success

27/04/2020, 14:41:06 M308 S3
Sensor 3 type Stepper driver temperature warnings, reading 0.0, last error: success

I'm in the middle of a print at the moment so can't make any config changes.

dc42

Thanks, I confirm this as a bug. Will be fixed in next RC.

tekkydave

OK, Thanks. I can live with a bit of fan noise for now

Garfield

Now running RC10. This issue still present.

gcode definition

; MCU
M308 S2 Y"mcu-temp" A"CPU"
M950 F2 C"!out4" A"MCU" Q25000 L.02  
M106 P2 T40:54 H2      ; set Duet cooling fan

Fan comes on @ 100% at just over 40 and doesn't go back off until 39, no ramp whatsoever

tekkydave

@Garfield I think I mentioned the issue was present in RC9 & 10. I singled out RC9 as that was when it first appeared

Garfield

Must slow down and read - only saw the RC9 bit - tagged on because I saw your post and had issue, @DC42 indicated it was known and fixed in the next RC - but wasn't sure if he meant RC10 - I need to take a break from the printer this week I think .....

jay_s_uk

Its part of this commit https://github.com/dc42/RepRapFirmware/commit/5dda6c9d5aaa24ea94f9246db73e702580e5d0dc which will beomcing in the next RC/Stable release

0

dc42 committed to dc42/RepRapFirmware

Bug fixes, and restore correct heigt after a tool change

Thermostatically-controlled fans were no longer forced to run at >=50%
PWM when on
Proportional control of thermostatic fans no longer worked
When restoring position after a pause or after skipping a build object,
the inverse bed compensation applied when recomputing the user position
did not take account of the tool offset
After a tool change, if on a FDM printer then we now move the new tool
to the correct Z height before resuming the print

dc42

@Garfield said in 3.01-RC9 Thermo Fan on Full:

Must slow down and read - only saw the RC9 bit - tagged on because I saw your post and had issue, @DC42 indicated it was known and fixed in the next RC - but wasn't sure if he meant RC10 - I need to take a break from the printer this week I think .....

I meant RC11. You can find preview RRF binaries (not fully tested) at https://www.dropbox.com/sh/3azy1njy3ayjsbp/AACquxr2m00eV568RZg5QG5wa?dl=0.

Garfield

Not your fault here Dave - all mine .. speed read and responded too quickly ... just figuring that my backup process's are somewhat lacking after the RC10 crashes and re-applying updated configuration which is how I spotted this.

I'll try to do better.

Schmart

@dc42 I can confirm that the internal build / preview binary no longer spins my case fan at 100%

dc42

Thanks for confirming this is fixed.

tekkydave

Just upgraded to 3.01RC11 and the bug is fixed.
Many Thanks